Hi all ... Does any one here have a 411 kdf or 40 / 338 chamber reamer .??? And do chambering or such...Thanks ,,,,,gumboot...

Not yet ... but I found a 'smith that can build me one , using a 338WM reamer and then 41cal neck/throat reamers. I pulled the pin on the project when I discovered there are nil cheap .41cal pistol projectiles in FMJ configuration. The standard pistol stuff will turn your plinking loads into single-shot mode. But the 300gr Hornady, plus 400gr Woodleigh makes this wildcat very tempting.
Here's a hint ... build a 411/338WM. Buy the Lee 416Taylor dies and remove the expander plug from the FL sizer. Run 458WM cases in and the necks are sized down enough to firmly hold a 0.411". Nothing like cheap dies for your wildcats
Cheers...
Con